[gcc r13-7174] Fortran: call of overloaded ‘abs(long long int&)’ is ambiguous [PR109492]

[gcc r13-7174] Fortran: call of overloaded ‘abs(long long int&)’ is ambiguous [PR109492]

[Harald Anlauf]

https://gcc.gnu.org/g:43816633afd275a9057232a6ebfdc19e441f09ec

commit r13-7174-g43816633afd275a9057232a6ebfdc19e441f09ec
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Thu Apr 13 22:42:23 2023 +0200

    Fortran: call of overloaded ‘abs(long long int&)’ is ambiguous [PR109492]
    
    gcc/fortran/ChangeLog:
    
            PR fortran/109492
            * trans-expr.cc (gfc_conv_power_op): Use absu_hwi and
            unsigned HOST_WIDE_INT for portability.

Diff:
---
 gcc/fortran/trans-expr.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/fortran/trans-expr.cc b/gcc/fortran/trans-expr.cc
index 79367fa2ae0..09cdd9263c4 100644
--- a/gcc/fortran/trans-expr.cc
+++ b/gcc/fortran/trans-expr.cc
@@ -3400,11 +3400,12 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr)
       && TREE_CODE (TREE_TYPE (rse.expr)) == INTEGER_TYPE)
     {
       wi::tree_to_wide_ref wlhs = wi::to_wide (lse.expr);
-      HOST_WIDE_INT v, w;
+      HOST_WIDE_INT v;
+      unsigned HOST_WIDE_INT w;
       int kind, ikind, bit_size;
 
       v = wlhs.to_shwi ();
-      w = abs (v);
+      w = absu_hwi (v);
 
       kind = expr->value.op.op1->ts.kind;
       ikind = gfc_validate_kind (BT_INTEGER, kind, false);